Roadway deviation prevention system

Details Roadway deviation prevention system Roadway deviation prevention system

1999-02-08

2000-05-16

Wu, Daniel J.

Communications: electrical

Land vehicle alarms or indicators

Of relative distance from an obstacle

340438, 340904, 340905, 340933, 340935, G60Q 100

Patent

active

060643013

ABSTRACT:
A roadway deviation prevention system prevents a vehicle from deviating from the roadway. This roadway deviation prevention system has an on-vehicle transceiver which transmits a vehicle presence signal having a prescribed frequency, and data carriers, which are installed on a road, for emitting a warning signal resonating with the vehicle presence signal when the vehicle comes close to the data carriers. The on-vehicle transceiver has an annunciator which generates an alarm sound to inform the presence of the data carriers to the driver of the vehicle based on an induced voltage generated in the transceiver unit by the electromagnetic induction of the warning signal. The data carrier emits the warning signal based only on the energy generated when the resonance circuit receives the vehicle presence signal. Thus, this data carrier operates with no power source.

REFERENCES:
patent: 4348652 (1982-09-01), Barnes et al.
patent: 4630044 (1986-12-01), Polzer
patent: 5039979 (1991-08-01), McClive
patent: 5268692 (1993-12-01), Grosch et al.
patent: 5318143 (1994-06-01), Parker et al.
patent: 5355137 (1994-10-01), Schurmann
patent: 5434781 (1995-07-01), Alofs et al.
patent: 5568137 (1996-10-01), Liu
patent: 5708427 (1998-01-01), Bush

Affiliated with

Also associated with

Rating

Roadway deviation prevention system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Roadway deviation prevention system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Roadway deviation prevention system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-262009